Browsing Physics & Atmospheric Science by Title
Now showing items 234-253 of 532
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A Keck/DEIMOS Kinematic Study of Andromeda IX: dark matter on the smallest galactic scales
(2005-10-20)We present the results of a kinematic survey of the dwarf spheroidal satellite of M31, And-IX, which appears to be the lowest surface brightness and also the faintest galaxy (M_V = -8.3) found to date. Using Keck/DEIMOS ... -
Kinematic and Chemical constraints on the formation of M31's inner and outer halo
(2007-11-28)The halo of M31 shows a wealth of substructures that are consistent with satellite accretion. Here we report on kinematic and abundance results from Keck/DEIMOS spectroscopy in the calcium triplet region of over 3500 red ... -
The kinematic footprints of five stellar streams in Andromeda's halo
(2008-10)(abridged) We present a spectroscopic analysis of five stellar streams (`A', `B', `Cr', `Cp' and `D') as well as the extended star cluster, EC4, which lies within streamC, all discovered in the halo of M31 from our ... -
The kinematic identification of a thick stellar disc in M31
(2010-10-25)We present the first characterization of a thick disc component in the Andromeda galaxy (M31) using kinematic data from the DEIMOS multi-object spectrograph instrument on Keck II. Using 21 fields in the South West of the ... -
A kinematic study of the Andromeda dwarf spheroidal system
(2013-02-26)We present a homogeneous kinematic analysis of red giant branch stars within 18 of the 28 Andromeda dwarf spheroidal (dSph) galaxies, obtained using the Keck I LRIS and Keck II DEIMOS spectrographs. Based on their g-i ... -
A kinematically selected, metal-poor stellar halo in the outskirts of M31
(2006-12-10)We present evidence for a metal-poor, [Fe/H]$\sim-1.4$ $\sigma$=0.2 dex, stellar halo component detectable at radii from 10 kpc to 70 kpc, in our nearest giant spiral neighbor, the Andromeda galaxy. This metal-poor sample ... -
The LABOCA survey of the Extended Chandra Deep Field South - radio and mid-infrared counterparts to submillimetre galaxies
(2010-12-01)We present radio and infrared (3.6-24um) counterparts to submillimetre galaxies (SMGs) detected in the Extended Chandra Deep Field South with the LABOCA 870-um bolometer camera on the 12-m Atacama Pathfinder Experiment. ... -
A LABOCA survey of the Extended Chandra Deep Field South - submillimeter properties of near-IR selected galaxies
(2009-03-31)Using the 330hr ESO-MPG 870-micron survey of the Extended Chandra Deep Field South (ECDF-S) obtained with the Large Apex BOlometer CAmera (LABOCA) on the Atacama Pathfinder EXperiment (APEX), we have carried out a stacking ... -
The LABOCA survey of the Extended Chandra Deep Field South: A photometric redshift survey of submillimetre galaxies
(2010-06-10)[abridged] We derive photometric redshifts from 17-band optical to mid-IR photometry of 74 robust counterparts to 68 of the 126 submillimetre galaxies (SMGs) selected at 870um by LABOCA observations in the ECDFS. The median ... -
The LABOCA Survey of the Extended Chandra Deep Field South: Clustering of submillimetre galaxies
(2011-12-01)We present a measurement of the spatial clustering of submillimetre galaxies (SMGs) at z = 1-3. Using data from the 870 micron LESS survey, we employ a novel technique to measure the cross-correlation between SMGs and ... -
The LABOCA survey of the Extended Chandra Deep Field South: Two modes of star formation in AGN hosts?
(2010-01-30)We study the co-existence of star formation and AGN activity in X-ray selected AGN by analyzing stacked 870um submm emission from a deep and wide map of the Extended Chandra Deep Field South, obtained with LABOCA at the ... -
THE LARGE APEX BOLOMETER CAMERA SURVEY OF THE EXTENDED CHANDRA DEEP FIELD SOUTH
(Published by the University of Chicago Press for the American Astronomical Society., 2009)No abstract available. -
Large gas reservoirs and free-free emission in two lensed star-forming galaxies at z=2.7
(2013-05-02)We report the detection of CO(1-0) line emission in the bright, lensed star-forming galaxies SPT-S 233227-5358.5 (z=2.73) and SPT-S 053816-5030.8 (z=2.78), using the Australia Telescope Compact Array (ATCA). Both galaxies ... -
Large surface radiative forcing from topographic blowing snow residuals measured in the High Arctic at Eureka
(2009)No abstract available. -
Large surface radiative forcing from topographic blowing snow residuals measured in the High Arctic at Eureka
(2009)No abstract available. -
Large-scale enhancements in NO/NOy from subsonic aircraft emissions: Comparisons with observations
(1997-12)No abstract available. -
The large-scale structure of the halo of the Andromeda Galaxy Part I: global stellar density, morphology and metallicity properties
(2013-11-22)We present an analysis of the large-scale structure of the halo of the Andromeda galaxy, based on the Pan-Andromeda Archeological Survey (PAndAS), currently the most complete map of resolved stellar populations in any ... -
Lattice sums for dipolar systems
(1987-12/01)A general method for the evaluation of lattice sums determining the effective parameters in the Hamiltonian of a dipolar magnetic system is described. The anisotropy of the Hamiltonian is examined for crystal structures ... -
Lattice-gas model to understand voltage profiles of LiNixMn2-xO4/Li electrochemical cells
(1997-08)No abstract available. -
Lattice-Gas-Model Approach to Understanding the Structures of Lithium Transition-Metal Oxides Limo(2)
(1994-01)No abstract available.